If enabling the mail service fails run the mchk utility to repair/rebuild the mail server configuration and restore the settings:
# /usr/local/psa/admin/sbin/mchk
I think you may have misunderstood what Peter meant. The error you are getting is common when the mail service isn't enabled for a particular domain. You'll need to make sure the service is enabled. You can find more information on the link Peter posted: https://support.plesk.com/hc/en-us/articles/12377934049047
I think you may have misunderstood what Peter meant. The error you are getting is common when the mail service isn't enabled for a particular domain. You'll need to make sure the service is enabled. You can find more information on the link Peter posted: https://support.plesk.com/hc/en-us/articles/12377934049047